Small-footprint wideband 94GHz rectifier for swarm micro-robotics

Hemour, Simon; Lorenz, Carlos H. P.; Wu, Ke

doi:10.1109/mwsym.2015.7167106

Cited by 34 publications

(18 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This could be attributed to the shorter feedlength of the rectifier, when considering the antenna's 50Ω feed, and the inaccuracies from the resistive and capacitive load mounting. Previously reported mmWave rectennas at 24 GHz [12], and 94 GHz rectenna [43], have shown a measured DC output higher than the simulated due to overestimating the diode's parasitics.…”

Section: MMmentioning

confidence: 74%

“…In [46], the authors study a 7 kW PA (formed of 8,192 GaN PAs with integrated power combining) which results in an 83 dBm EIRP with a 15 dB antenna. Although [46] shows that 92 GHz is the frequency where the highest power could be delivered, rectenna implementations beyond 90 GHz, such as [43], use diodes with significantly higher costs than the MA4E1319 used in this work. For example, a single Virginia Diodes W-band diode can cost $15-100, making it unsuitable for low-cost IoT applications.…”

Section: B Wearable Mmwave Powering: Practical Considerationsmentioning

confidence: 99%

See 1 more Smart Citation

Broadband Millimeter-Wave Textile-Based Flexible Rectenna for Wearable Energy Harvesting

Wagih

Hilton

Weddell

et al. 2020

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

Millimeter-Wave (mmWave) bands, a key part of future 5G networks, represent a potential channel for RF energy harvesting, where the high-gain antenna arrays offer improved end-to-end efficiency compared to sub-6 GHz networks. This paper presents a broadband mmWave rectenna, the first rectenna realized on a flexible textile substrate for wearable applications. The proposed novel antenna's bandwidth extends from 23 to 40 GHz, with a minimum radiation efficiency of 67% up to 30 GHz, over 3 dB improvement compared to a standard patch. A stable gain of more than 8 dB is achieved based on a textile reflector plane. The antenna is directly connected to a textilebased microstrip voltage doubler rectifier utilizing commercial Schottky diodes. The rectifier is matched to the antenna using a tapered line feed for high-impedance matching, achieving broadband high voltage-sensitivity. The rectifier has a peak RF-DC efficiency of 12% and a 9.5 dBm 1 V sensitivity from 23 to 24.25 GHz. The integrated rectenna is demonstrated with more than 1.3-V DC output from 12 dBm of mmWave wireless power across a 28% fractional bandwidth from 20 to 26.5 GHz, a 15% half-power fractional bandwidth, and a peak output of 6.5V from 20 dBm at 24 GHz.

show abstract

Section: MMmentioning

confidence: 74%

Section: B Wearable Mmwave Powering: Practical Considerationsmentioning

confidence: 99%

Broadband Millimeter-Wave Textile-Based Flexible Rectenna for Wearable Energy Harvesting

Wagih

Hilton

Weddell

et al. 2020

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

show abstract

“…Moreover, Panagiotis et al have proposed energy-efficient power control in wireless powered communication networks [12]. Research examples of millimeter wave rectennas are the following: rectenna for energy harvester of temperature sensing tag using CMOS 65 nm [13], ultra-small rectenna for microrobot [14], high-efficiency dual-frequency rectenna using CMOS 0.13 µm [15], rectenna as first fully on-chip energy harvester using CMOS 65 nm [16], RF-DC conversion efficiency improvement achieved using high-precision fabrication of MMIC (Monolithic Microwave Integrated Circuit) and MEMS (Micro Electro Mechanical Systems) [17,18]. Furthermore, as another major factor with which the high-power wireless power supply experiment in the millimeter wave band is not actively conducted, the maximum output power of the oscillation source greatly decreases as the frequency increases [19].…”

Section: Introductionmentioning

confidence: 99%

“…Earlier reports of studies examining rectenna RF-DC conversion efficiency for frequency[2][3][4][5][6][7][8][9][10][13][14][15][16][17][18][22][23][24].…”

mentioning

confidence: 99%

See 1 more Smart Citation

Wireless Power Transfer via Subterahertz-Wave

Mizojiri

Shimamura

2018

Applied Sciences

View full text Add to dashboard Cite

Research on wireless power transmission by a rectenna using millimeter waves and subterahertz waves is gaining attention. It is expected that energy harvesters at high frequencies will be developed for use with future 5 G. High-power wireless power supply to various applications will be possible because of miniaturization of the rectenna. As described herein, we investigate earlier studies of millimeter-wave wireless power supply, selecting and explaining salient examples of millimeter-wave high power wireless power supply.

show abstract